x=0:0.001:1;

figure;
title('F figure of different r');

subplot(2,2,1);
hold on;
plot(x,F_logistic(x,2));
plot(x,x,'r');
title('r=2');

subplot(2,2,2);
hold on;
plot(x,F_logistic(F_logistic(x,3.2),3.2));
plot(x,x,'r');
title('r=3.2');

subplot(2,2,3);
hold on;
plot(x,F_logistic(F_logistic(F_logistic(F_logistic(x,3.5),3.5),3.5),3.5));
plot(x,x,'r');
title('r=3.5');